3 papers
cs.CR2026
Scarcity Is Not Enough: Structural Limits of Linear Sybil Cost Under Parallelizable Resources
Homayoun Maleki, Nekane Sainz, Jon Legarda +1
Permissionless systems resist Sybil attacks by binding influence to scarce resources. Yet influence concentration persists across systems built on computation, capital, and other r…
cs.DC2026
Proof of Commitment: A Human-Centric Resource for Permissionless Consensus
Homayoun Maleki, Nekane Sainz, Jon Legarda
Permissionless consensus protocols require a scarce resource to regulate leader election and provide Sybil resistance. Existing paradigms such as Proof of Work and Proof of Stake i…
cs.CR2026
Human Challenge Oracle: Designing AI-Resistant, Identity-Bound, Time-Limited Tasks for Sybil-Resistant Consensus
Homayoun Maleki, Nekane Sainz, Jon Legarda
Sybil attacks remain a fundamental obstacle in open online systems, where adversaries can cheaply create and sustain large numbers of fake identities. Existing defenses, including…